augh i just beat the game and then my progress is gone right as the timer increases :(
Are you referring to the extension of the countdown by adding centuries?
Yes, that does make the game longer. However, your progress shouldn't be lost because of it. The growing multipliers should still be active and continue to accelerate your progress.
I had previously finished the game in 1d10h — much faster than intended. Since the game is still in its alpha phase, there will likely be more balancing patches in the future. That’s why the centuries were added.
But don’t worry — there will soon be another way to speed up your progress ;)